The Infectious risk has eased over the past 12 weeks, bringing current levels down from earlier weeks..
Allergy risk activity has been increasing over the past 12 weeks in Corson, South Dakota.
No Pollution activity has been reported over the past 12 weeks in Corson, South Dakota.
Weather risk activity has held steady over the past 12 weeks in Corson, South Dakota.
Last updated: July 6, 2026
Data refreshed weekly